Author：DEEPDate：2020-4-9
Precautions for using masks——N95 mask and Disposable surgical mask
Wash your hands before wearing a mask, or avoid touching your hands with the inside of the mask while wearing the mask to reduce the possibility of the mask being contaminated.
Distinguish the inside, outside, top and bottom of the mask clearly.
Do not squeeze the mask by hand. N95 masks can only isolate the virus on the surface of the mask. If you squeeze the mask by hand, the virus will wet the mask with the droplets and it is easy to cause virus infection.
Try to make the mask and the face have a good adhesion. The simple test method is: after putting on the mask, exhale hard, and the air cannot leak out from the edge of the mask.
The protective mask must be close to the user's face, and the user must shave the beard to ensure that the mask can fit the face. The beard and anything between the mask seal and the face will cause the mask to leak.
After adjusting the position of the mask according to your face shape, use the index finger of both hands to press the nose clip along the upper edge of the mask to make it fit closely with the face.
When the following conditions occur, the mask should be replaced in time:
When the respiratory impedance increases significantly,
When the mask is damaged or damaged,
When the mask and face cannot be in close contact,
The mask is contaminated (such as blood stains or droplets)
The mask has been contaminated (has been used in individual wards or patients contacted);
If the mask contains activated charcoal and there is an odor in the mask;
When the mask is used longer than the recommended duration.
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